I checked the compressor here and the return spring bracket is painted black, no wonder I over-looked it. It looks like in your pic Bill, when the line workers removed the intake manifold bolt where the support bracket attaches they replaced the painted bolt with either a black or natural un-painted bolt.

And MikeR, thanks again and for the newest pics, yes the a/c compressor support bracket for '70 is like the '69, and would only require one longer bolt as you stated.

Noticed that the compressor here is missing the cap for the shrader valve, anyone got one extra they can spare??!! Any leads on a new one?